Dryer furnace wall tile



Dec. '7, 1965 G, P. REINTJES ETAL 3,221,680

DRYER FURNACE WALL TILE Original Filed Jan. 16. 1961 INVENTORS G EORGE P. REINTJES BY DONALD RBYFIELD any United States Patent 3,221,680 DRYER FURNACE WALL TILE George P. Reintjes and Donald R. Byfield, Kansas City, Mo, assignors to Geo. P. Reintjes Co., Inc., Kansas City, Mo., a corporation of Missouri Continuation of application Ser. No. 82,814, Jan. 16, 1961. This appiication Apr. 22, 1963, Ser. No. 276,121 1 Claim. (Cl. 110-72) This is a continuation of application Serial No. 82,814, filed January 16, 1961, now abandoned.

This invention relates to air inlet wall tiles particularly intended for use in dryer furnaces and the like, where it is desired that tempering air be admitted to lower the tem perature of hot combustion gases and to increase their volume, and at the same time avoid the formation of cold and hot stratifications within the furnace. Also in the present invention, the air is preferably admitted from the bottom to flow vertically in a natural manner, cool the supporting castings and avoid pressure drop.

Another object of the invention is to provide dryer furnace wall tile having a plurality of inlet openings of circular contour and having a more or less venturi effect on the air passing through the passageways into the furnace.

A further object of the invention is to provide tile having through openings disposed therein in such a manner that radiant rays are intercepted so that there is no direct ray radiation through the Wall.

A still further object of the invention is to space the tile Wall away from the furnace buckstays so that air may flow both vertically and horizontally, and thus no vertical lane can build up a pressure in excess of adjacent lanes as pressure in adjacent lanes will be equalized by horizontal flow.

With the general objects named and in View of others as will hereinafter appear, the invention consists of certain new and useful features of construction and a combination of parts as hereinafter described and claimed; and in order that it may be fully understood, reference is made to the accompanying drawing, in which:

FIGURE 1 is a perspective view of a wall embodying the invention, parts being broken away to reveal details of construction;

FIG. 2 is a reduced horizontal section in the plane of a row of hanger tile; and

FIG. 3 is a rear perspective view of the back of a wall I tile.

In the said drawing, where like reference characters identify corresponding parts in all of the figures, 1 i a series of spaced buckstays supporting an outer encasement 2, in the construction illustrated, so that vertically extending air circulating ducts are provided between adjacent buckstays, the air being normally admitted at the bottom :so that it follows natural upward circulation. Positioned on the inner faces of the buckstays in horizontally vertically spaced rows, are a series of clips 3 which rernovably support box castings 4 formed with upstanding notched lips 5 to receive tile-supporting hangers 6.

The rows of hangers 6 carry rows of support tile 7, each of said tiles being stepped at its upper and lower ends as at 8, to provide for breaking the horizontal wall joints. Extending cross wise of the tile 7 and centered between 3,221,680 Patented Dec. 7, 1965 the steps 8, are dovetail slots 9 to receive the hangers 6 regardless of which end of the tile is up. The tile 7 form horizontal belts which support intermediate tile 10 which are formed at their upper and lower ends with steps 15 to interlock with the steps 8 of the tile 7.

The tile 7 is formed with multiple, curvilinear through air grooves in one side face thereof so that, c-onjointly with adjacent tile, circular rows of curvilinear air passages are provided through the Wall to avoid back pressure and insure uninterrupted flow of air into the furnace. The grooves are preferably provided in triplicate to secure the maximum square foot air discharge outlet as compared to the square foot area in the wall, the two outer grooves 11 being curved to merge into the center groove 12. All three grooves in tile 7 terminate in a single air inlet port 16 in the outer edge surface of the tile 7. The curved shape of the two outer grooves 11 prevents or interrupts through radiation of radiant rays from the furnace,

which radiation through the middle passageway is prevented by a boss 13 intersecting the center groove 12. When tile are positioned in a wall, the grooves of adjacent tile cooperate together as described to form the through air passageways.

With a furnace as described, air is discharged from the outlet ports over the entire area of the furnace wall and the tempered atmosphere within the furnace will be found uniform and particularly suited for drying furnaces in the sugar, lumber, coal, chemical and other industries.

From the above description and drawing it will be evident that we have produced a furnace wall embodying all of the advantageous features set forth as desirable, and while we have described and illustrated the prefer-red embodiment, it is to be understood that we reserve the right to all changes within the spirit and scope of the appended claim.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

In a furnace wall, a pair of wall tile in side by side relationship whereby to present abutting faces and adjoining inner and outer edge surfaces, the abutting faces of each of said tile having companionate grooves formed therein, said grooves combining to define multiple air passages through the tile, there being a central air passage and a pair of outer air passages, there being a common inlet opening for said passages formed in the outer edge surfaces of said tile and a separate outlet opening for each passage formed in the inner edge surfaces of said tile; the outer passages being curved to intersect with said central passage as the common inlet opening is approached, the combined cross-sectional area of the passages at the point of intersection being greater than the cross-sectional area of said common inlet opening; and a boss at said point of intersection.

References Cited by the Examiner UNITED STATES PATENTS 1,625,082 4/1927 Helbi-g -72 1,710,901 4/ 1929 Schroeder 11072 1,790,110 1/1931 Nygaard et a1. 110-72 PERCY L. PATRICK, Primary Examiner.

KENNETH W. SPRAGUE, JAMES W. WESTHAVER,

Examiners. 

